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kvm/msi: do explicit commit when adding msi routes

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We invoke the kvm_irqchip_commit_routes() for each addition to MSI route
table, which is not efficient if we are adding lots of routes in some cases.

This patch lets callers invoke the kvm_irqchip_commit_routes(), so the
callers can decide how to optimize.

[1] https://lists.gnu.org/archive/html/qemu-devel/2021-11/msg00967.html

Signed-off-by: Longpeng <longpeng2@huawei.com>
Message-Id: <20220222141116.2091-3-longpeng2@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Longpeng(Mike) 2022-02-22 22:11:16 +08:00 • committed by Paolo Bonzini
parent 9568690868
commit def4c5570c
7 changed files with 21 additions and 10 deletions
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2
accel/stubs/kvm-stub.c
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@ -77,7 +77,7 @@ int kvm_on_sigbus(int code, void *addr)
return 1;
}
int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev)
int kvm_irqchip_add_msi_route(KVMRouteChange *c, int vector, PCIDevice *dev)
{
return -ENOSYS;
}